Gyratory Crusher (GY Model)


1. Excellent Design

The GY’s design is a combination of the most modern engineering techniques and applications. Earthtechnica’s newest 60-109 GY can be divided into several smaller parts for its flexibility of transportation and installation costs. Each of these individual parts are built for endurance and long life wear.

2. Long Experience & Numerous Installations

With more than 80 years of experience, Earthtechnica have supplied more than 120 gyrator crushers to mines and quarries worldwide – and through their strategic partnership with Minprovise we bring this experience to the Australian market.



Gyratory Crusher (KG Model)


1. Simple Discharge Set Adjustment

The discharge setting is adjusted by the amount of oil in the hydraulic cylinder installed at the bottom of the main shaft.

2. Main Shaft Collapse Prevention

If a large hard ore enters the crushing chamber, the main shaft may develop a jumping action. To prevent the main shaft from falling down, the hydraulic support for the main shaft is maintained by raising a piston within the balance cylinder, which contains air and oil.

3. Re-start Capability while Loaded

If the crusher stops unexpectedly during its procedure and its raw material needs to be removed from the crushing chamber, the KG’s hydraulic system will accommodate by lowering its crushing head in order to discharge the wedged ore – allowing for immediate restart.

4. Heavy Duty Spider Bearing

The KG’s large spherical bearing is equipped with a spider bearing to reinforce it for continuous heavy strain and long life.

HPC Cone Crusher

High Pressure and Performance Crushing

The HPC Cone Crusher has been designed and developed to achieve a high crushing ratio and high through-put capacity, with its newly designed crushing chamber – through which the density of feed material is increased from inlet to outlet as the materials are crushed under high pressure.

The robust design of the crusher body is reinforced to withstand “High Pressure Crushing” (HPC) and to ensure  that the crusher can be operated under heavy operating conditions for long periods of time.


1. High Performance

HPC curved crushing chamber. The bisector line is vertical at the inlet of the crushing chamber, with a gradual slant from inlet to outlet. This design ensures the gravitational push of feed materials downwards into the crushing chamber at an economical and efficient rate, increasing not only your through-put capacity, but also your high set-under ratio.

2. Endurance of Performance

In the case of conventional cone crushers, usually the inlet width of the crushing chamber decreases through the constant wear of its crushing members. In the case of Earthtechnica’s HPC, the upper region of its crushing parts is especially reinforced  with a unique groove, the ensures the even wear of its parts from inlet to outlet.

3. Wide Inlet of Crushing Chamber

The configuration of the upper part of the HPC concave is an inverse cone which provides a wide inlet into the crushing chamber. The HPC can recieve very flat and/or long materials without bridging, thus the crusher can be used as a substitute for the secondary gyratory crushers.

4. Robust Body Design

The HPC is specifically designed for the body to withstand continuous heavy loads of feed materials that are also robust and strong in nature – especially Iron Ore.


ZI Cone Crusher

Earthtechnica’s ZI-series Cone Crushers have been developed to incorporate all the successful features of their previous CYBAS Cone to achieve increased performance within the same size body. The crushing members of the ZI CONE are a combination of a mantle, concave with grooves, and special mild inserts (MSI). This arrangement leads to compound crushing; consisting of not only compression, but also crushing through bending and shearing actions. The synergy of this compound and high density inter-particle crushing within the main chamber results in superior results with large feed capacities while using less energy.


1. High Crushing Capacity

The high capacity of the ZI Cone’s crushing chamber, coupled with its combined crushing effect, results in a remarkable improvement in crushing capacity.

2. High Set Under Ratio and Professional Shape

The bisector line of the ZI crushing chamber is almost vertical at the inlet. Its angle of inclination changes gradually until it reaches a specific angle at the outlet. Accordingly, the density of the feed material is increased as it proceeds from the inlet towards the outlet. This causes inter-particle crushing due to the high density in the crushing chamber. As a result, a product with roundish cubic shape can be produced, with high set under ratio.

3. Lower Energy Cost

The ZI CONE performs combined crushing through bending, shearing and compressing actions of its grooved crushing plates, as compared to conventional crushers that use compression only. This leads to a more efficient use power output, which in turn leads to considerable energy savings.

4. Easy adjustment of discharge setting

The ZI’s Hydraulic system provides easy discharge settings, even during operation, through it’s easy-use control panel. These adjustments can also be remotely controlled.

5. Easy and Safe Maintenance

The inside of the ZI crusher can be easily checked through its large inspection windows located on its bottom frame. A Special torch ring enables the easy and quick replacement of the liners in a short time while the head nut for its mantle can be used repeatedly.

Astro Jaw-E Crusher


1.  Large crushing capacity with new “V” chamber design

The newly designed “V-shape” crushing chamber ensures the Jaw Crushers ability to withstand large capacities of feed material, while Its reversible, corrugated jaw plates create a non-choke configuration.

2. Strong Body Design

This crusher is fully fabricated with a stress-reinforced, one-piece frame and swing-jaw, both of which are built to last and go the hard yards.

3. Easy Maintenance

The Astro comes with a set-adjusting device which cuts lead times in half. Its jaw plates retain their position through bolted wedges while spherical roller bearings with labyrinth seals prevent the ingress of dust.

Super Sander (KMC)

Sand Making Impact Crusher

The Super Sander is a specialist machine, designed for dry crushing and grinding for sand production. Flaky materials are crushed and ground down to a superior product shape.

Feed material is constantly fed into the crushing and grinding chamber, which is formed through the unique combination of grinding path and inter-particle crushing components – achieving a product size and quality comparable to natural sand.



Super Impeller (KIS)


1. Excellent Product Shape

Excellent grain forms are achieved by the adoption of this crushers special grinding path system and its improvements to impact and grinding operations. Additionally, the machine is capable of producing reduced material sizes as a result of its high reduction ratio.

2. Easy Maintenance

The Super Impeller’s boltless  system makes the fixing or replacement of its striking blades and grinding path liners simple and efficient, while also ensuring that its daily maintenance and control is front of mind with ease.

3. Easy Adjustment of the Discharge Opening

The variability of adjustment to the discharge opening and grinding path are made practical and simple through this crushers unique hydraulic cylinder.

Impeller Breaker (KAP/SAP)


1. Greater Crushing Ratio

A high crushing ratio of 10-3 (compared to the 5-3 of conventional gyrators, cone or roll crushers) effectively eliminates several crushing processes from more basic crushing systems.

2. Cubical Products

Compared to compression crushers, the Impeller Breaker produces much higher quality cubical products – ensuring greater savings for mortar than the aggregate of other machines crushing concrete of equal strength.

3. Selective Crushing Capacity and Uniform Product Size

Because of the lack of binding force, feed materials can be seperated into their various elemental components. The size or shape of these material feeds also has no influence whatsoever on the final product size.

4. Low Power Consumption and Minimum Installation Costs

As an impact crusher, the greatest portion of power transmitted to the rotor is used purely for crushing. As this machine is compact, yet powerful, the impeller breaker requires little space. Vibration-free operation means simpler, less costly foundations.

5. Safety with Foreign Materials and Easy Maintenance

If foreign materials enter the crusher, the impact plate ensures ensures this unwanted material is quickly discharged. The Impeller Breaker is so well designed and manufactured that no operator training is required to operate it – just simple usage instructions.

Super Breaker (KSB)

Primary Impact Crusher

The Super Breaker is an impact crusher with a single rotor, specially designed for primary crusher use in cement plants. Earthtechnica’s experienced technology makes it possible to feed the materials directly to the roller mill without any secondary crushing required. The Super Breaker will help your company increase its productivity and profit.


1. High Reduction Ratio and Capacity

With a high capacity crushing chamber, fixed striking blade, two impact plates and one grinding path, all arranged effectively around the rotor, the Super Breaker is optimised to achieve high reduction ratios and capacities. The materials can be fed to the roller mill without the need for any secondary crushing.

2. Tough and Reliable

It’s simple and robust design, combined with its large force of inertia allow for this crusher to withstand ongoing heavy-duty use with guaranteed reliability.

3. Cost Efficient

Installing just one Super Breaker can make your crushing system simpler, while reducing the total amount of power required throughout your processes, minimising your operation costs. It’s striking blade and other important wear parts are fabricated with high quality, wear resistant steel castings.


Compound Crusher (AP-C)

Primary Impact Crusher – Double Rotor

The Compound Crusher is a double-rotary, primary impact crusher, which functions as both a primary and secondary crusher.


1. High Reduction Ratio and Capacity

With its high capacity crushing chamber, fixed striking blade and single grinding path arranged effectively around its rotor, this compound crusher is optimised to achieve high reduction ratios while taking on large capacities of feed material. These materials can then be fed to the ball mill without the need for any secondary crushing.

2. Robust and Reliable Design

It’s simple robust design and rotor creating strong inertia forces allows this crusher to withstand heavy-duty use with reliable durability.

3. Easy Maintenance and Operation

The compound crusher is equipped with a fully hydraulic system which allows for easy and adjustable product sizing and maintenance. Large inspection hatches are engineered to all faces of the machine.